Super Namek

Super Nameks were a group of ancient Nameks who managed to unlock their abilities and achieve seemingly insurmountable power. However, with so much power, they were more susceptible to corruption and misused it. To rid their world of the new villains, the Namekians used Porunga, the Namekian Dragon, to banish them.

The only known case of a Super Namek that didn't misuse his own power was the original Nameless Namekian, as well as Piccolo after he was reunified withKami.

After Piccolo fuses with Kami, he powers up to levels well beyond of the existing Nameks. Thus, he is called by Krillin a "Super Namek" because of his new and extraordinary powers, able to far eclipse the strength of an untrainedSuper Saiyan.

In Dragon Ball Z: Lord Slug, some extremely powerful Nameks found the ancient secret to unlock a higher consciousness within, becoming "Super Nameks". These Super Nameks were extremely aggressive and very different from their agrarian counterparts. These Super Nameks also seem to be able to show off their true power. They were banished from the planet using the Dragon Balls. The only shown example of such is Lord Slug.

It is doubtful that Super Nameks are a fundamentally different type of Namek. Super Nameks, as far as can be discerned, are simply very powerful Nameks, and the term "Super Namek" is only a nickname.